Abstract
We propose a convenient method for achieving highly birefringent (HiBi) elliptic microfibers by use of the -laser machining and the flame-brushing techniques. With optimization of fabrication process, a high birefringence of up to is experimentally obtained. Especially, within a polarization Sagnac interferometer acting as a refractive index (RI) sensor, both positive and abnormal negative sensitivity is measured, dependent on the geometrical variables of the HiBi microfiber. The maximum RI sensitivity is around , which is the highest among the microfiber devices as reported, to our knowledge.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
X. Fang, C. R. Liao, and D. N. Wang
Opt. Lett. 35(7) 1007-1009 (2010)
Lipeng Sun, Jie Li, Yanzhen Tan, Xiang Shen, Xiaodong Xie, Shuai Gao, and Bai-Ou Guan
Opt. Express 20(9) 10180-10185 (2012)
Wa Jin, Chao Wang, Haifeng Xuan, and Wei Jin
Opt. Lett. 38(21) 4277-4280 (2013)